Question

10-[12-(-9-1)]

bỏ ngoặc rồi tính

 

Answer 1

   10 - [ 12 - ( -9 - 1 ) ]

= 10 - 12 - 9 - 1

= -2 - 9 - 1

=   -11 -1

=     -12

Answer 2

10-(12-(-9-1))=10-(12--10)=10-22=-12

Answer 3

10-[12-(-9-1)]

=10-(12+9+1)

=10-12-9-1

=-12

Answer 4

Ta có: \(10-\left[12-\left(-9-1\right)\right]\)

\(=10-\left(12+9+1\right)\)

\(=10-\left(12+10\right)\)

\(=10-12-10\)

\(=-12\)